Browse the evidence

Female gender is associated with a lower risk of Shift Work Disorder symptoms compared to male gender in this nursing population.

While women are often thought to be more vulnerable to shift work, this study found female nurses had a lower risk of SWD symptoms than male nurses. This may reflect selection bias in the nursing profession.

Adiponectin, des-acyl ghrelin, and leptin are adipokines that decrease insulin resistance and subsequently nonalcoholic fatty liver disease (NAFLD), whereas proinflammatory cytokines TNF-α and IL-6 enhance insulin resistance and promote NAFLD.

Your liver health is heavily influenced by hormones from your fat tissue. Maintaining a healthy weight and metabolic balance can improve levels of protective hormones like adiponectin and reduce inflammatory signals like TNF-α, thereby lowering the risk of fatty liver disease.

Leptin levels are elevated in obesity and NASH, correlating with hepatic steatosis severity, but leptin resistance may prevent its protective anorectic effects.

High leptin levels in obesity do not automatically lead to weight loss due to leptin resistance; addressing the underlying metabolic state is necessary to restore sensitivity.

Food fortification and thiamine supplementation are effective interventions for raising thiamine status and reducing infantile beriberi in high-risk regions, although trial data remains limited.

If you live in an area where rice is the main food source, check if it is fortified. If you are pregnant or breastfeeding, discuss thiamine supplementation with your healthcare provider to protect your baby's health.

Subclinical thiamine deficiency in childhood may have lifelong neurodevelopmental consequences, necessitating urgent public health responses even in the absence of overt clinical symptoms.

In areas where thiamine deficiency is common, ensure children receive adequate thiamine through diet or supplementation, even if they appear healthy, to protect their long-term brain development.

Adipose tissue-specific overexpression of Vascular Endothelial Growth Factor (VEGF) protects against diet-induced obesity and insulin resistance by enhancing angiogenesis, increasing thermogenesis, and shifting macrophage polarization toward an anti-inflammatory M2 phenotype.

This research suggests that improving blood vessel density in adipose tissue (angiogenesis) may help prevent obesity and insulin resistance. In mice, this was achieved by overexpressing VEGF, which increased energy expenditure (thermogenesis) and reduced inflammatory markers. While not a direct human intervention, it highlights the importance of adipose tissue health and vascularization in metabolic function.

Activation of the alternative bile acid synthetic pathway, specifically via increased CYP7B1 expression and non-12α-hydroxylated bile acids (e.g., CDCA, TUDCA), improves glucose and lipid metabolism by reducing lipid absorption and enhancing energy expenditure.

Focus on dietary patterns or interventions that support the alternative bile acid pathway, such as consuming polyphenol-rich foods like Pu-erh tea (theabrownin) or fermented foods that may influence gut microbiota bile salt hydrolase activity. This shift favors non-12α-hydroxylated bile acids, which are associated with improved glucose tolerance and reduced lipid absorption in metabolic disease contexts.

Inhibition of intestinal bile salt hydrolase (BSH) activity by compounds like theabrownin or riboflavin increases conjugated bile acids in the distal ileum, which inhibits intestinal FXR signaling and upregulates hepatic CYP7B1, thereby promoting the alternative bile acid pathway.

Consider incorporating Pu-erh tea or other sources of theabrownin into your diet. These compounds may inhibit bacterial enzymes in the gut, leading to a favorable shift in bile acid signaling that supports metabolic health.

High levels of 12α-hydroxylated bile acids (derived from the classical pathway) are associated with metabolic disorders like insulin resistance and type 2 diabetes, whereas a higher ratio of non-12α-hydroxylated bile acids is beneficial.

Monitor bile acid profiles if possible; a lower ratio of 12α-hydroxylated bile acids (like cholic acid) to non-12α-hydroxylated bile acids (like chenodeoxycholic acid) may be a marker of better metabolic health.

Synbiotic supplementation (Lactobacillus/Bifidobacterium + GOS) during a low-carbohydrate high-protein weight loss program does not significantly improve body composition or weight loss outcomes compared to placebo.

If you are following a low-carb, high-protein weight loss diet, adding this specific synbiotic supplement (Lactobacillus/Bifidobacterium + GOS) for 3 months will not help you lose more weight or body fat than the diet alone. The diet works; the supplement did not add to it in this study.

Synbiotic supplementation significantly alters gut microbiota composition by increasing the abundance of Lactobacillus and Bifidobacterium, but this change is not associated with improved body composition.

The supplement successfully changed your gut bacteria levels, increasing beneficial strains like Lactobacillus. However, this biological change did not result in weight loss or body composition changes in this study.

Age-related sarcopenia and osteoporosis are driven by a decline in the GH/IGF1 axis, specifically through reduced circulating levels and impaired post-receptor signaling efficiency (e.g., IRS/PI3-K/AKT pathway) in muscle and bone cells.

As you age, your body's natural production of Growth Hormone and IGF-1 drops, and your cells become less responsive to them. This biological shift contributes significantly to muscle wasting and bone loss, independent of how much you exercise. Understanding this hormonal decline highlights the importance of maintaining muscle mass through resistance training and potentially exploring medical interventions for those with diagnosed deficiencies, rather than accepting tissue loss as an unavoidable fate.

Fucoxanthin improves insulin sensitivity and reduces blood glucose levels by down-regulating pro-inflammatory adipokines (TNF-α, MCP-1, IL-6) and regulating lipid metabolism enzymes.

Fucoxanthin may help manage blood sugar and insulin resistance by reducing inflammation in fat tissue and regulating enzymes involved in fat synthesis. This supports metabolic health, particularly for those with insulin resistance.

High-dose long-chain omega-3 supplementation (>4.4 g/day) may worsen glucose metabolism, including increasing the risk of diabetes diagnosis and raising HbA1c and fasting glucose.

If you are taking very high doses of omega-3 (more than 4.4 grams per day), be aware that this might negatively impact your blood sugar levels. While the evidence is not definitive, it suggests a potential risk of worsening glucose control at these high doses. Consult your doctor before maintaining such high doses.

Increasing alpha-linolenic acid (ALA) intake may increase fasting insulin levels by approximately 7%, but has little or no effect on other glucose metabolism markers.

If you are increasing your intake of alpha-linolenic acid (found in flaxseed, canola, and walnuts), be aware that it might slightly increase your fasting insulin levels. While the effect on blood sugar itself is negligible, this insulin change is worth monitoring if you have insulin resistance.

Higher sodium (salt) intake is associated with significantly increased odds of developing incident chronic kidney disease (CKD).

To prevent kidney disease, reduce your salt intake. The study shows that higher sodium levels are linked to a higher risk of developing CKD. Public health efforts should focus on reducing population-wide sodium consumption. This is a key modifiable lifestyle factor.

Current and former tobacco smoking is associated with significantly increased odds of developing incident chronic kidney disease (CKD).

Do not smoke, and if you do, quit. Both current and former smoking are associated with an increased risk of developing kidney disease. Public health messages should support smoking cessation to prevent CKD.

Moderate alcohol consumption is associated with a reduced risk of developing incident chronic kidney disease (CKD) compared to no or low consumption.

If you drink alcohol, do so in moderation. The study suggests that moderate consumption is associated with a reduced risk of CKD compared to no consumption. However, heavy drinking may be harmful. Follow public health guidelines for alcohol consumption.

Aging induces a shift in mesenchymal stem cell lineage toward adipogenesis and away from osteoblastogenesis, driven by low-grade chronic inflammation (LGCI) from Western diets, resulting in osteosarcopenic obesity.

Focus on reducing inflammation through diet (increasing Omega-3s, decreasing Omega-6s) rather than just weight loss, as visceral fat drives the loss of bone and muscle in aging.

Resistant Starches (RS2, RS3) are lipid neutral, having no significant effect on serum lipids, while some nonabsorbable sugars (e.g., lactulose) may raise serum cholesterol.

Not all fiber works the same. Resistant starches (found in cooled potatoes/rice) do not lower cholesterol. Some nonabsorbable sugars like lactulose might even raise it. Focus on viscous fibers for cholesterol management.

The metabolic benefits associated with Bifidobacterium longum and Faecalibacterium prausnitzii are conditional on dietary intake, specifically disappearing after adjusting for carbohydrate (fiber) and fat intake, respectively.

If you consume probiotics like Bifidobacterium longum or Faecalibacterium prausnitzii, ensure your diet includes adequate dietary fiber and healthy fats. The study suggests these bacteria's metabolic benefits are linked to these macronutrients, so combining them with a fiber-rich, balanced diet may be more effective than the bacteria alone.

A ketogenic diet (KD) provides neuroprotective benefits in Alzheimer's disease by serving as an alternative energy substrate (ketone bodies) that bypasses impaired glucose metabolism, thereby improving mitochondrial function, reducing oxidative stress, and lowering neuroinflammation.

Adopting a ketogenic diet shifts the brain's fuel source from glucose to ketone bodies, which may help mitigate Alzheimer's progression by improving mitochondrial efficiency and reducing inflammation. This involves consuming a diet with very high fat (approx. 90% of calories) and very low carbohydrates (≤10%). While promising in animal models for reducing amyloid plaques, human clinical data is still emerging, and lipid profiles should be monitored.

Transfeminine hormone therapy is associated with an increased risk of venous thromboembolism (VTE), particularly with oral ethinyl estradiol or conjugated equine estrogen, whereas transdermal estradiol may mitigate this risk.

If you are a transgender woman on hormone therapy, be aware that oral conjugated equine estrogen carries a higher risk of blood clots than oral estradiol or transdermal estrogen. If you have risk factors like smoking, obesity, or a history of blood clots, discuss transdermal estrogen (patch/gel) with your doctor to minimize thrombotic risk.

Current estimates of brown adipose tissue (BAT) contribution to total energy expenditure are likely significant underestimates because 18FDG PET/CT underestimates true BAT volume, especially in obese individuals.

Standard scans might underestimate your brown fat, especially if you are overweight. This means your body might have more potential for cold-induced calorie burning than currently thought.